Honeywell R7500C user manual

Summary of the content on the page No. 1

R7500C Wide Range Proportional
Temperature Controller
INSTALLATION INSTRUCTIONS

They are fastened to the mounting surface through the two
diagonally opposed mounting holes in the back of the case.
See Fig. 1.
For access to the mounting holes, remove the cover from the
case by loosening the cover mounting screw.
The mounting holes are now visible through the circuit board
notches in the upper right and lower left-hand corners.
Determine placement of the mounting holes in the surface
an

Summary of the content on the page No. 2

R7500C WIDE RANGE PROPORTIONAL TEMPERATURE CONTROLLER Table 1. Wire Resistance, Ohms per 1,000 Feet (304m). WIRING Wire Dia. Ohms/1000 ft All wiring must agree with local electrical codes and Wire Gage Size (mm) (304 m) of Wire ordinances. 18 1.00 6.5 Since the Controller circuits are rated NEC Class 2, some 16 1.25 4.0 local codes allow open (no conduit) wiring. 14 1.60 2.6 Number 18 gage 1.0 mm insulated wire or two- or three­ 12 2.00 1.6 conductor thermostat cable is accepta

Summary of the content on the page No. 3

R7500C WIDE RANGE PROPORTIONAL TEMPERATURE CONTROLLER 11-12 Vdc + POWER – SUPPLY MODULTROL IV MOTOR BALCO 1 MAIN SENSOR BLACK ORANGE L1 T2 C 8.2K L2 T1 ORANGE YELLOW R X-FORMER R7500 VIOLET BROWN M7186A1004 2 M7185G1000 BALCO COMPENSATION SENSOR 1 C AND T2 ARE INTERNALLY CONNECTED. AN 8.2K OHM RESISTOR IS PROVIDED INTERNALLY TO CORRECTLY LOAD THE R7500 OUTPUT. 2 OPTIONAL COMPENSATION SENSOR. SUBSTITUTE WITH 500 OHM RESISTOR WHEN COMPENSATION IS NOT USED. C7830

Summary of the content on the page No. 4

R7500C WIDE RANGE PROPORTIONAL TEMPERATURE CONTROLLER COMPENSATION RATIO ADJUSTMENT CHECKOUT AND TESTING Compensation ratio is the number of degrees temperature CHECKOUT change required at the compensation sensor to change the primary sensor control point one degree F. The only checkout ordinarily required is to slowly rotate the When a compensation sensor (T2) is used, the compensation Setpoint Adjustment through the total proportional band of the ratio adjustment provides a means for

Summary of the content on the page No. 5

R7500C WIDE RANGE PROPORTIONAL TEMPERATURE CONTROLLER NOTE: 1. To ensure correct voltage readings in the following tests, a 500-ohm resistor should be substituted for the compensation sensor (if its temperature is not near 75F [24C]) and “comp. ratio” should be set at 20. 2. If the controller output is not connected, wire a 390 ohm “load” resistor from orange to yellow wires. R7500 Adjust setpoint knob to correspond to the ambient temperature at the main sensor. Set the proportion

Summary of the content on the page No. 6

Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited-Honeywell Limitée Honeywell Plaza 740 Ellesmere Road P.O. Box 524 Scarborough, Ontario QUALITY IS KEY Minneapolis, MN 55408-0524 M1P 2V9 95-7205 Rev. 10-95 Printed in U.S.A.